Exception occured while saving ScenarioModule 'ContractVesselTracker': System.NullReferenceException: Object reference not set to an instance of an object at ContractConfigurator.ContractVesselTracker+<>c__DisplayClass6.<OnSave>b__3 (.Vessel v) [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Vessel].GetIndex (Int32 startIndex, Int32 count, System.Predicate`1 match) [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Vessel].Find (System.Predicate`1 match) [0x00000] in <filename unknown>:0 at ContractConfigurator.ContractVesselTracker.OnSave (.ConfigNode node) [0x00000] in <filename unknown>:0